<?php

class LtCacheAdapterMemcached implements LtCacheAdapter
{
    public function connect($hostConf)
    {
        $connectionResource = new Memcached();
        $connectionResource->addServer($hostConf["host"], $hostConf["port"]);
        return $connectionResource;
    }

    public function add($key, $value, $ttl = 0, $tableName, $connectionResource)
    {
        return $connectionResource->add($this->getRealKey($tableName, $key), $value, $ttl);
    }

    public function del($key, $tableName, $connectionResource)
    {
        return $connectionResource->delete($this->getRealKey($tableName, $key));
    }

    public function get($key, $tableName, $connectionResource)
    {
        return $connectionResource->get($this->getRealKey($tableName, $key));
    }

    public function update($key, $value, $ttl = 0, $tableName, $connectionResource)
    {
        return $connectionResource->replace($this->getRealKey($tableName, $key), $value, $ttl);
    }

    protected function getRealKey($tableName, $key)
    {
        return $tableName . "-" . $key;
    }
}